Messages in this thread | | | Subject | Re: [PATCHv4 08/10] mm/kasan: Switch to using __pa_symbol and lm_alias | From | Andrey Ryabinin <> | Date | Thu, 1 Dec 2016 14:36:05 +0300 |
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On 11/29/2016 09:55 PM, Laura Abbott wrote: > __pa_symbol is the correct API to find the physical address of symbols. > Switch to it to allow for debugging APIs to work correctly.
But __pa() is correct for symbols. I see how __pa_symbol() might be a little faster than __pa(), but there is nothing wrong in using __pa() on symbols.
> Other > functions such as p*d_populate may call __pa internally. Ensure that the > address passed is in the linear region by calling lm_alias.
Why it should be linear mapping address? __pa() translates kernel image address just fine. This lm_alias() only obfuscates source code. Generated code is probably worse too.
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